Andy
Well-Known Member
- Joined
- Jan 6, 2008
- Messages
- 3,497
Nahhhhhhhhhhh! global warming is just a man made myth......
Nahhhhhh! Liberal intelligence is a myth. No one anywhere suggested there isn't global warming. Most question only whether it's man-made. If liberals would actually read, and be able to comprehend, they would understand that.
• Average temperatures have climbed 1.4 degrees Fahrenheit (0.8 degree Celsius) around the world since 1880, much of this in recent decades, according to NASA's Goddard Institute for Space Studies.
The Goddard Institute is known to be bias. James Hansen is one of the so-called 'fathers of global warming', and has been directing GISS since the early 80s. The GISS has, under his leadership, always had inflated and boosted warming numbers that lead the pack compared to other respectable science firms.
A perfect example of this was GISS October surprise announcement that it was the hottest october in ever recorded. Unfortunately, this brought on a lot of questions by meteorologists who had noticed un-seasonal snow, and dropping temps. This added critique of GISS's report led to the discovery that the temp data used for October, was fabricated. The data was carried over from prior months. Thankfully James Hansen is in government where there are no expectations to meet quality requirements, only political requirements.
Nevertheless, the fact our climate has risen 0.8 ºC for 100 years prior till now, should indicated that the climate is always changing.
• The rate of warming is increasing. The 20th century's last two decades were the hottest in 400 years and possibly the warmest for several millennia, according to a number of climate studies. And the United Nations' Intergovernmental Panel on Climate Change (IPCC) reports that 11 of the past 12 years are among the dozen warmest since 1850.
There are two problems with the data given. First, many of the temp recording locations are now in developed areas that skew the results. For example, a recorded temp in farm land years ago, would now be much higher in a place developed with roads, cars, homes and buildings. So while it looks as if temperatures are increase, it may only be the effects of a developed area.
The second is the largely questionable, and limited methods for determining temps from long ago. Prior to the recorded instrumentation of temperature data, most have used tree rings. The problem is, there are only certain locations and tree types that can use tree ring data to determine temps. It's also a violation of credible data gathering methods, to use one specific measuring system for one data set, and a totally different one for another data set, and expect to get meaningful results.
One wonders why they do not use tree ring data for the all the temperature information? Of course it's possible they don't like the answers they get when doing so.
• The Arctic is feeling the effects the most. Average temperatures in Alaska, western Canada, and eastern Russia have risen at twice the global average, according to the multinational Arctic Climate Impact Assessment report compiled between 2000 and 2004.
• Arctic ice is rapidly disappearing, and the region may have its first completely ice-free summer by 2040 or earlier. Polar bears and indigenous cultures are already suffering from the sea-ice loss.
While the arctic is generally melting, the antarctic, is growing massively. Temps have dropped for the last 35 years, and the ice sheets are not large enough that some scientists are saying it may start to lower the global water level.
• Glaciers and mountain snows are rapidly melting—for example, Montana's Glacier National Park now has only 27 glaciers, versus 150 in 1910. In the Northern Hemisphere, thaws also come a week earlier in spring and freezes begin a week later.
Norway Glaciers are growing.
Glaciers in the Himalayas are growing and expanding.
Ice and snow on Yukon's soaring Mount Logan, in Canada, is growing.
Arctic sea ice growing at the fastest rate since 1979.
Alaskan glaciers grow 1/3 of a mile in under a year.
If you need more, let me know. Otherwise, I'm moving on.
• Coral reefs, which are highly sensitive to small changes in water temperature, suffered the worst bleaching—or die-off in response to stress—ever recorded in 1998, with some areas seeing bleach rates of 70 percent. Experts expect these sorts of events to increase in frequency and intensity in the next 50 years as sea temperatures rise.
1998 was the year of El Nino. After that passed, temps returned to relatively normal temps.
• An upsurge in the amount of extreme weather events, such as wildfires, heat waves, and strong tropical storms, is also attributed in part to climate change by some experts. [/B]
Typically increasing temps reduce weather events. In order for weather invests to form, the temp must drop to allow water vapor in the air to condense into water droplets that make up clouds which are the basis for weather events. A leading climatologist said the far from seeing in increase in tropical storms, hurricanes and tornados, these events have declined in warmer years.
called greenhouse gases because they effectively 'trap' heat in the lower atmosphere) and re-radiation downward of some of that heat.
Not exactly. There is no way to "trap" heat in an open system. There is no one-way glass covering the planet. Otherwise, you are dead on.
Human activity has been increasing the concentration of greenhouse gases in the atmosphere (mostly carbon dioxide from combustion of coal, oil, and gas; plus a few other trace gases). There is no scientific debate on this point.
Actually there is much debate on this. We know that CO2 in increasing, but do we know it is exclusively due to us? One of the interesting, but much less known results from the Arctic Ice Core samples is that CO2 levels were found to be much higher than our current 380 PPM, and much lower the the assumed 'normal' 280 PPM. In other words, is it possible there is a natural change in the concentration of CO2? If the Ice Core samples are to be trusted, then clearly it is.
Pre-industrial levels of carbon dioxide (prior to the start of the Industrial Revolution) were about 280 parts per million by volume (ppmv), and current levels are greater than 380 ppmv and increasing at a rate of 1.9 ppm yr-1 since 2000. The global concentration of CO2 in our atmosphere today far exceeds the natural range over the last 650,000 years of 180 to 300 ppmv. According to the IPCC Special Report on Emission Scenarios (SRES), by the end of the 21st century, we could expect to see carbon dioxide concentrations of anywhere from 490 to 1260 ppm (75-350% above the pre-industrial concentration).
Again, the pre-industrial revolution of 280, is simply the amount recorded at the time. There is no real way of knowing if that was the upswing, or downswing recording of a naturally fluctuating amount.
Also, what many people don't realize is that all human activity only amounts to just 2.5% of the total global out put of CO2. 97.5% of the CO2 in the atmosphere is naturally created. Claiming that our tiny fraction of the CO2 made, is some to blame for a 36% increase in CO2, fairly laughable, especially when there are dozens of factors that effect our atmosphere that we don't understand.
But I would guess, to some folks, that NOAA, USGS, and National Geographic rank right up there with National Inquirer, Star magazine and the rest of the gossip rags.....
If you don't have anything to say, don't. I deleted the rest of your rant for the sake of other posters. We don't want to hear it, thanks.